The Bounty by Janet Evanovich and Steve Hamilton

FBI agent Kate O’Hare and international con man Nicolas Fox are back in a race across continents when a shadowy organization tied to the Nazi regime resurfaces. After Nick’s father, a legendary thief, is kidnapped, the pair must uncover the secret behind a lost fortune hidden since World War II. From the streets of Paris to the mountains of Austria and the jungles of South America, every clue draws them closer to a deadly conspiracy — and a treasure powerful enough to rewrite history. In this relentless chase, loyalty and deception blur as Fox and O’Hare fight to survive the ultimate heist.